Collaborative Research: The Effect of Submesoscale Processes on Property Fluxes and Distributions in the Upper Ocean

合作研究：次尺度过程对上层海洋属性通量和分布的影响

• 批准号: 0623264
• 负责人: Amit Tandon
• 金额: $ 17.71万
• 依托单位: University of Massachusetts, Dartmouth
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-15 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0623264&HistoricalAwards=false
• 关键词: Collaborative; Research; Effect; Submesoscale; Processes

ABSTRACTOCE-0623513Vertical transport between the sea surface and the interior of the ocean is instrumental in a variety of processes including the supply of nutrients for plankton production as well as the exchanges of gases, heat and momentum with the atmosphere. The mechanisms that control these properties is a long-standing question on our understanding of the upper ocean. Features on the order of one kilometer ( as scale known as the submesoscale) play an important role in these processes. In this study, scientists from Boston University and the University of Massachusetts Dartmouth, will use a high-resolution numerical model of an upper ocean front, in order to explore the dynamics of these features and their effects on vertical transport, mixing and the distribution of properties. They have three hypotheses: 1) in the presence of horizontal density gradients and wind stress, submesoscale instabilities generate intense vertical velocities; 2) these processes thus enhance nutrient supply and the exchange of dissolved gases with the atmosphere; 3) regions of high strain (in which filaments of properties such as a nutrients are stretched and stirred) are also regions of localized intense vertical motions. This project will further our understanding of submesoscale processes, an area of great current interest in physical oceanography. Its focus on how these processes impact passive tracers is particularly innovative because it has the potential to broadly impact other disciplines.

Abstractoce-0623513海面和海洋内部之间的逆转运输在各种过程中发挥了作用，包括浮游生物生产的营养素以及气体的交流，与大气的交流，热量和动量。控制这些特性的机制是我们对上海的理解的长期问题。一公里（称为“子尺度”）的订单的特征在这些过程中起着重要作用。在这项研究中，波士顿大学和马萨诸塞大学达特茅斯大学的科学家将使用上海阵线的高分辨率数值模型，以探索这些特征的动力及其对垂直运输，混合和物业分布的影响。 它们有三个假设：1）在存在水平密度梯度和风应力的情况下，子尺度上的不稳定性会产生强烈的垂直速度； 2）因此，这些过程可以增强养分供应，并与大气的溶解气体交换； 3）高应变区域（其中含有养分等特性的细丝和搅拌）也是局部强烈垂直运动的区域。该项目将进一步了解我们对集合过程的理解，这是当前对物理海洋学兴趣的领域。它关注这些过程如何影响被动示踪剂特别是创新的，因为它有可能广泛影响其他学科。